Breeze TD, Vaissière BE, Bommarco R, Petanidou T, Seraphides N, Kozák L., Scheper J., Biesmeijer JC, Kleijn D, Gyldenkærne S, Moretti M, Holzschuh A, Steffan-Dewenter I, Stout JC, Pärtel M, Zobel M, Potts SG. 2014. Agricultural Policies Exacerbate Honeybee Pollination Service Supply-Demand Mismatches Across Europe. PLoS ONE 9, e82996, doi:10.1371/journal.pone.0082996
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0082996